package info.qingshui.browser.hk;
import info.qingshui.browser.hk.file.FileHelper;
import info.qingshui.browser.hk.setting.Setting;


import info.qingshui.browser.R;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.net.Uri;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
public class UpdateManager {
	private Context mContext;
	// 提示标题
	private String updateTitle = "有版本更新";
	// 提示标题
	private String updateContent = "有最新的软件包哦,亲快下载吧~";
	
	private Setting setting;
	
	// 返回的安装包url
	private String updateURL = "http://qingshui.info:8080/hk.apk";
	
	private boolean canCancel = true;
	private Dialog downloadDialog;
	
	private Dialog noticeDialog;
	/* 下载包安装路径 */ //@todo 待优化
	private  String savePath = "/sdcard/";// Setting.getSetting(this.mContext).getSetingFileRootPath();
	private  String saveFileName = savePath
			+ "qingshuiRelease.apk";
	/* 进度条与通知ui刷新的handler和msg常量 */
	private ProgressBar mProgress;
	private static final int DOWN_UPDATE = 1;
	private static final int DOWN_OVER = 2;
	private int progress;
	private Thread downLoadThread;
	private boolean interceptFlag = false;//用户是否取消下载
	private Handler mHandler = new Handler() {
		public void handleMessage(Message msg) {
			switch (msg.what) {
				case DOWN_UPDATE:
					mProgress.setProgress(progress);
					
					if(  progress >= 100) {
						downloadDialog.dismiss();
					}
					break;
				case DOWN_OVER:
					installApk();
					break;
				default:
					break;
				}
		};
	};
	public UpdateManager(Setting setting, Context context,String updateContent, String updateURL) {
		this.setting = setting;
		this.mContext = context;
		this.updateTitle = this.mContext.getResources().getString(R.string.update_default_title);
		this.updateContent = updateContent;
		this.updateURL  = updateURL;
		this.savePath = Setting.getSetting(this.mContext).getSetingFileRootPath();
	}
	// 外部接口让主Activity调用
	
	/**
	 * 检查更新
	 */
	public void checkUpdateInfo() {
		showNoticeDialog();
	}
	
	private void showNoticeDialog() {
		AlertDialog.Builder builder = new Builder(mContext);
		builder.setTitle(updateTitle);
		builder.setMessage(this.updateContent );
		builder.setPositiveButton(this.mContext.getResources().getString(R.string.common_download), new OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				dialog.dismiss();
				showDownloadDialog();
			}
		});
		if( canCancel ) {
			builder.setNegativeButton(this.mContext.getResources().getString(R.string.common_doitlater), new OnClickListener() {
				@Override
				public void onClick(DialogInterface dialog, int which) {
					if( null != setting ) {
						setting.setRemaindedUpdate(true);
					}
					dialog.dismiss();
				}
			});
		}
		noticeDialog = builder.create();
		noticeDialog.show();
	}
	
	private void showDownloadDialog() {
		AlertDialog.Builder builder = new Builder(mContext);
		builder.setTitle(this.updateTitle );
		final LayoutInflater inflater = LayoutInflater.from(mContext);
		View v = inflater.inflate(R.layout.progress, null);
		mProgress = (ProgressBar) v.findViewById(R.id.progress);
		builder.setView(v);
		if( canCancel ) {
			builder.setNegativeButton(this.mContext.getResources().getString(R.string.common_cancel), new OnClickListener() {
				@Override
				public void onClick(DialogInterface dialog, int which) {
					//下载过程点取消按钮
					dialog.dismiss();
					interceptFlag = true;
				}
			});
		}
		downloadDialog = builder.create();
		downloadDialog.show();
		downloadApk();
	}
	private Runnable mdownApkRunnable = new Runnable() {

		@Override
		public void run() {
			try {
				URL url = new URL(updateURL);
				HttpURLConnection conn = (HttpURLConnection) url
						.openConnection();
				conn.connect();
				int length = conn.getContentLength();
				InputStream is = conn.getInputStream();
				File file = new File(savePath);
				if (!file.exists()) {
					file.mkdir();
				} else {//删除缓存
					FileHelper.delFile( file );
				}
				String apkFile = saveFileName;
				File ApkFile = new File(apkFile);
				FileOutputStream fos = new FileOutputStream(ApkFile);
				int count = 0;
				byte buf[] = new byte[1024];
				do {
					int numread = is.read(buf);
					count += numread;
					progress = (int) (((float) count / length) * 100 + 1);
					// 更新进度
					mHandler.sendEmptyMessage(DOWN_UPDATE);
					//Log.d(UpdateManager.class.getSimpleName(), "down load numread=" + numread + " allcout=" + count);
					if (numread < 0) {
						// 下载完成通知安装
						mHandler.sendEmptyMessage(DOWN_OVER);
						break;
					}
					fos.write(buf, 0, numread);
				} while (!interceptFlag);// 点击取消就停止下载.
				fos.close();
				is.close();
			} catch (MalformedURLException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	};
	/**
	 * 
	 * 下载apk
	 * 
	 * @param url
	 */
	private void downloadApk() {
		downLoadThread = new Thread(mdownApkRunnable);
		downLoadThread.start();
	}
	/**
	 * 
	 * 安装apk
	 * 
	 * @param url
	 */
	private void installApk() {
		try {
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		File apkfile = null;
		try {
			apkfile = new File(saveFileName);
			if (!apkfile.exists()) {
				return;
			}
			Intent i = new Intent(Intent.ACTION_VIEW);
			i.setDataAndType(Uri.parse("file://" + apkfile.toString()),
					"application/vnd.android.package-archive");
			mContext.startActivity(i);
		} catch (Throwable e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			
		}
	}

	public boolean isCanCancel() {
		return canCancel;
	}

	public void setCanCancel(boolean canCancel) {
		this.canCancel = canCancel;
	}
	
	
}
